Thanks Dimka Vardina, i manage to get it working using the code that you indicated and the ignite ui component.

As i said before i was fidelling with hierarchical grids , and i detected that a grid that load all info on initialization didnt detect the child transaction, and a grid that uses load demand functionality detects the child transactions.

on those two project grids i add the updating feature and i enabled the add row.

after those project i started a new project that i am doing..and i decided that i want to create a custom dialog box with some custom css, to add a child row, 

in this case i detected some diferences between adding a main row, or adding a child row...

the diference was that in order to add a child row, i need to find the subrid and then i can add it.

adding a main row

 $("#hierarchicalGrid").igGridUpdating("addRow", { data });

adding a child row need i bit more of coding..

var childGrids = $("#hierarchicalGrid").igHierarchicalGrid("allChildren");
$.each(childGrids, function (ix, grid) {
var iIDRowFather = $(grid).closest("tr").prev().attr("data-id");
if (iIDRowFather  == IDOnWhereIWantToAddTheChildRow) {
$(grid).igGridUpdating("addRow", { data });
$(grid).igGrid("commit");
$("#hierarchicalGrid").igHierarchicalGrid("saveChanges");
}
});

Thanks once again Dimka Vardina for your response, and to always trying to help...

i just need one more thing, for now, and that is, how can i have two hierarchicalgrid in the same view...

let say on the view i have:

 Html.Infragistics().Grid(Model1)

 Html.Infragistics().Grid(Model2)

how can i do that, and how can i diferentiate both models...int he controller can i send more that one GridMoldel object?

In order to enable updating it is need to add something like the code below in the section where the grid features are enabled: gridModel.Features.Add(new GridUpdating() { EditMode = GridEditMode.Row}); Back to the EditSaveChanges() description - two separate lists of transactions are used for each of the levels: one for the changes applied to the parent rows and one for the rows from all child grids. public ActionResult EditingSaveChanges() { ViewData["GenerateCompactJSONResponse"] = false; GridModel m = new GridModel(); // transactions for changes in rows from the parent grid List<Transaction> categoryTransactions = m.LoadTransactions(HttpContext.Request.Form["ig_transactions"]); foreach (Transaction t in categoryTransactions) { if (t.layoutKey == null) { if (t.type == "deleterow") { DataRow dr = this.CategoriesProducts.Tables["Categories"].Rows.Find(Int32.Parse(t.rowId)); this.CategoriesProducts.Tables["Categories"].Rows.Remove(dr); } else if (t.type == "row") { Category categoryRow = (Category)t.row; DataRow dr = this.CategoriesProducts.Tables["Categories"].Rows.Find(Int32.Parse(t.rowId)); if (categoryRow.CategoryName != null) { dr["CategoryName"] = categoryRow.CategoryName; } if (categoryRow.Description != null) { dr["Description"] = categoryRow.Description; } } } } // transactions for changes in rows from child grids List<Transaction> productTransactions = m.LoadTransactions(HttpContext.Request.Form["ig_transactions"]); foreach (Transaction t in productTransactions) { if (t.layoutKey == "Products") { if (t.type == "deleterow") { DataRow dr = this.CategoriesProducts.Tables["Products"].Rows.Find(Int32.Parse(t.rowId)); this.CategoriesProducts.Tables["Products"].Rows.Remove(dr); } else if (t.type == "row") { Product productRow = (Product)t.row; DataRow dr = this.CategoriesProducts.Tables["Products"].Rows.Find(Int32.Parse(t.rowId)); if (productRow.ProductName != null) { dr["ProductName"] = productRow.ProductName; } if (productRow.CategoryID != null) { dr["CategoryID"] = productRow.CategoryID; } if (productRow.UnitPrice != null) { dr["UnitPrice"] = productRow.UnitPrice; } if (productRow.UnitsInStock != null) { dr["UnitsInStock"] = productRow.UnitsInStock; } dr["Discontinued"] = productRow.Discontinued; } } } JsonResult result = new JsonResult(); Dictionary response = new Dictionary(); response.Add("Success", true); result.Data = response; return result; } Please note that if it is needed to work with three, four, … n level hierarchical grid it is needed to add a separate transaction list for each level. Hope this helps. If you have any specific questions don’t hesitate to contact me again.

hi, in this past weekend i was playing with hierarchical grid, and i detect some problems(or not)..

so i have a success changes handler...and i want to detect changes on main grid, and changes on the subgrid...

the problem is that i need to know where i am, i mean, if i call success changes handler on the main grid i can do this:

$("#hierarchicalGrid").igHierarchicalGrid("saveChanges");
$("#hierarchicalGrid").igGridUpdating("option", "saveChangesSuccessHandler", function (data) {
var ResultOfSaveChanges = data.Success;
CheckResultOfSaveChangesGrid(ResultOfSaveChanges)
});

but if i am on the subgrid... i need to do this:

$("#hierarchicalGrid").igHierarchicalGrid("saveChanges");
$(grid).igGridUpdating("option", "saveChangesSuccessHandler", function (data) {
var ResultOfSaveChanges = data.Success;
CheckResultOfSaveChangesGridResultOfSaveChanges)
});

in this case i need ti add the method to the current subgrid...

is it normal?

is it possible to add this method to all of the subrgids...on initialization?